Home / 2,085.76-2,877.44-1,246.20

Finding the Fourth Proportional to 2,085.76, 2,877.44 and 1,246.20

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Solution

The fourth proportional to 2,085.76, 2,877.44 and 1,246.20 is: 1,719.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,085.76 : 2,877.44 = 1,246.20 : x
  2. Step 2: Convert to fraction form
    2,085.76/2,877.44 = 1,246.20/x
  3. Step 3: Cross multiply
    2,085.76x = 2,877.44 × 1,246.20
  4. Step 4: Simplify right side
    2,085.76x = 3,585,865.73
  5. Step 5: Solve for x
    x = 3,585,865.73/2,085.76
  6. Step 6: Final answer
    x = 1,719.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.